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This paper describes the implementation steps used to assign a swarm of unmanned aerial vehicles (UAVs) tasked to effectively deliver items to target locations. Several possible and acceptable constraints are defined and solved in each step of implementation in order to facilitate the actual operation of aerial autonomous deliveries for a large warehouse. The proposed implementation is determined...
For the retrieval of satellite-derived sea surface temperature (SST), an empirical regression algorithm has been widely used so far despite its local bias. Recently, as fast radiative transfer model (RTM) enable near real-time simulations of clear-sky BTs, a hybrid SST algorithm has been suggested, which is based on regression between the incremental values (satellite-observed BT minus first-guess...
UBcN (Ultra-Broadband Convergence Network) is the next generation network with high speed, on which broadband multiple play services are supported safely and seamlessly. Developing UBcN as the common infrastructure for converged services is considered to be essential for increasing the power of competition of IT industries. The Korea government is going to establish UBcN by 2013 with the speed of...
Efficient phosphors based on YNbO4 and doped by Eu3+, Ga3+, Al3+ were synthesized and investigated under UV, and X-ray excitation in luminescence and Raman spectroscopy. Monoclinic fergusonite crystal structure and excellent luminescent properties under X-ray excitation allow recommend these phosphors as good candidates for different applications.
Korea possesses a high-speed network infrastructure that excels those of other advanced countries, as a result of a series of network advancement projects; however, although small farming and fishing villages in remote places can access the Internet, the data rate remains low. As a result, various convergence services cannot be used in these areas, unlike in metropolitan cities and small and medium...
The thickness of ONO inter-poly dielectrics dominates the program and erase speed of a flash memory cell transistor with a stack gate structure. Therefore, as flash devices shrink, it is important to prevent the degradation in reliability while scaling down the thickness of the oxide. However, the thickness of the bottom oxide formed on a heavily doped poly-silicon cannot be easily reduced because...
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